Andrew Churchman, an IT manager who commutes from Trumpington to London's Liverpool Street, said he was "extremely annoyed" to have missed his train on Monday (May 22).

He told the News : "They have introduced a new loop into the Addenbrooke's site at the research campus but there's no passengers at all at that time. Unfortunately that adds four minutes and doesn't allow it to connect with the fast train to London.

"If it's called the railway service they should connect to the direct trains."

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Andrew said he was among the roughly 10 commuters seeking to catch either the 6.45am train to London King's Cross or 6.47am service to Liverpool Street who missed their trains earlier this week. The next fast services to either stations are around half an hour later.

"It's affecting a number of people," said Andrew. "[There's] annoyance and some of that annoyance was given to the driver but it's not his fault.

Andrew said he since first missing his train he has managed to run to the platform and beat the closing of the doors but if the situation continued he would have to drive to Whittlesford station to catch the train there.

"That costs me an extra £100 a month and its not good for the environment," Andrew added.

"All they need to do is reflect the new stop in the timetable."

Andy Campbell of Stagecoach East

Andy Campbell, managing director of Stagecoach East, said: "We have had many requests for a bus to service the newly-extended Addenbrookes campus, which is why we have taken the decision to incorporate a three-minute diversion into the Route R schedule.

"This service now runs between Trumpington Park and Ride and the main railway station, via the hospital complex.

"To minimize the impact on rail passengers, we have also doubled the frequency of the service so that it runs every 15 minutes instead of half-hourly at peak times.

"This service coordinates with the Route A service, also every 15 minutes, and so, in practice, there will be a regular bus to the station at seven to eight minute intervals.

"We are continuing to monitor the situation to see how many people are affected, and will always consider making changes to improve the service further."